Irish Rail has apologised to customers who were “caught up in a very distressing situation” while travelling on the Bray service on Sunday afternoon.
A Spokesperson for the company said there will be a full investigation into the “chaotic and upsetting” scenes at Bray Dart Station.
Thousands of people had travelled to Bray for the Air Display.
Passengers on the DART opened the doors after waiting up to an hour and walked the remainder of the journey on the tracks after the train stopped short of the station due to trains backing up.
Conditions on the carriages were described as cramped and hot.
Speaking on RTÉ’s Morning Ireland this morning. spokesman for Irish Rail, Barry Kenny, said that the actions of some people who “had genuine concerns” for their well-being led to significant disruption on the line.
“This is one of the busiest and traditionally best days on the Dart and it became chaotic and very upsetting for a lot of people and certainly I think we’ve ruined the day out for a lot of people and we understand that.”